Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Recorded Investment	$ 3,616		$ 1,979
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	3,054	2,206	2,107
Total Loans, Unpaid Principal Balance	16,501	15,508	19,277
Total Loans, Recorded Investment	15,700	13,937	17,401
Total Loans, Allowance for Loan Losses Allocated	3,054	2,206	2,107
Total Loans, Average Impaired Loans	14,130	11,764	11,717
Total Loans, Interest Income Recognized	557	143	864
Total Loans, Cash Basis Interest Recognized	557	143	864
Residential Real Estate Loans [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance	732	914	619
Loans with No Related Allowance Recorded, Recorded Investment	732	774	407
Loans with No Related Allowance Recorded, Average Impaired Loans	544	662	493
Loans with No Related Allowance Recorded, Interest Income Recognized	25	22	0
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized	25	22	0
Residential Real Estate Loans [Member] \| Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Unpaid Principal Balance	678	420	420
Loans with Related Allowance Recorded, Recorded Investment	678	420	420
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	237	128	128
Loans with Related Allowance Recorded, Average Impaired Loans	487	420	420
Loans with Related Allowance Recorded, Interest Income Recognized	25	7	23
Loans with Related Allowance Recorded, Cash Basis Interest Recognized	25	7	23
Total Loans, Allowance for Loan Losses Allocated	237	128	128
Commercial Real Estate Owner Occupied [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance	1,477	5,557	5,528
Loans with No Related Allowance Recorded, Recorded Investment	1,476	5,557	5,528
Loans with No Related Allowance Recorded, Average Impaired Loans	1,391	4,529	4,729
Loans with No Related Allowance Recorded, Interest Income Recognized	31	23	338
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized	31	23	338
Commercial Real Estate Owner Occupied [Member] \| Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Unpaid Principal Balance	290
Loans with Related Allowance Recorded, Recorded Investment	290
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	290
Loans with Related Allowance Recorded, Average Impaired Loans	73
Loans with Related Allowance Recorded, Interest Income Recognized	0
Loans with Related Allowance Recorded, Cash Basis Interest Recognized	0
Total Loans, Allowance for Loan Losses Allocated	290
Commercial Real Estate Nonowner Occupied [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance	6,699	3,948	10,085
Loans with No Related Allowance Recorded, Recorded Investment	5,899	3,048	8,847
Loans with No Related Allowance Recorded, Average Impaired Loans	6,513	3,657	4,767
Loans with No Related Allowance Recorded, Interest Income Recognized	267	25	456
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized	267	25	456
Commercial Real Estate Nonowner Occupied [Member] \| Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Unpaid Principal Balance	3,408	2,737	1,979
Loans with Related Allowance Recorded, Recorded Investment	3,408	2,486	1,979
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	1,409	2,078	1,979
Loans with Related Allowance Recorded, Average Impaired Loans	3,439	1,520	1,132
Loans with Related Allowance Recorded, Interest Income Recognized	94	26	38
Loans with Related Allowance Recorded, Cash Basis Interest Recognized	94	26	38
Total Loans, Allowance for Loan Losses Allocated	1,409	2,078	1,979
Commercial and Industrial [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance	1,981		426
Loans with No Related Allowance Recorded, Recorded Investment	1,981		0
Loans with No Related Allowance Recorded, Average Impaired Loans	1,089		0
Loans with No Related Allowance Recorded, Interest Income Recognized	72		0
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized	72		0
Commercial and Industrial [Member] \| Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Unpaid Principal Balance	1,018
Loans with Related Allowance Recorded, Recorded Investment	1,018
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	1,111
Loans with Related Allowance Recorded, Average Impaired Loans	540
Loans with Related Allowance Recorded, Interest Income Recognized	35
Loans with Related Allowance Recorded, Cash Basis Interest Recognized	35
Total Loans, Allowance for Loan Losses Allocated	1,111
Home Equity Loans [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance		219	220
Loans with No Related Allowance Recorded, Recorded Investment		219	220
Loans with No Related Allowance Recorded, Average Impaired Loans		165	176
Loans with No Related Allowance Recorded, Interest Income Recognized		7	9
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized		7	9
Home Equity Loans [Member] \| Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with Related Allowance Recorded, Unpaid Principal Balance	218
Loans with Related Allowance Recorded, Recorded Investment	218
Loans with Related Allowance Recorded, Allowance for Loan Losses Allocated	7
Loans with Related Allowance Recorded, Average Impaired Loans	54
Loans with Related Allowance Recorded, Interest Income Recognized	8
Loans with Related Allowance Recorded, Cash Basis Interest Recognized	8
Total Loans, Allowance for Loan Losses Allocated	7
Construction [Member] \| No Related Allowance Recorded (Member)
Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment [Line Items]
Loans with No Related Allowance Recorded, Unpaid Principal Balance		1,713
Loans with No Related Allowance Recorded, Recorded Investment		1,433
Loans with No Related Allowance Recorded, Average Impaired Loans		811
Loans with No Related Allowance Recorded, Interest Income Recognized		33
Loans with No Related Allowance Recorded, Cash Basis Interest Recognized		$ 33

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